/* AI Assisted Solver（製品ページ・MRO LP・デモ共通）— styles（ライトのみ） */

:root {
  /* ライトのみ（ダークモードは使わない） */
  color-scheme: light;
  --paper: #EDF1F3;
  --paper-deep: #E1E7EB;
  --surface: #F8FAFB;
  --ink: #13233B;
  --ink-soft: #3B4A5D;
  --steel: #5C6979;
  --line: #C8D1D8;
  --line-soft: #DAE1E6;
  --amber: #B87800;
  --amber-fill: #DE9A1C;
  --amber-wash: #F7E9CC;
  --green: #2F7D5B;
  --window: #B7C5CE;
  --on-accent: #13233B;
  --shadow: 0 1px 2px rgb(19 35 59 / 0.06), 0 12px 32px -12px rgb(19 35 59 / 0.22);
  --grid-dot: rgb(19 35 59 / 0.09);

  --font-ja: "IBM Plex Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  --font-latin: "Barlow Semi Condensed", "IBM Plex Sans JP", sans-serif;

  --step--1: 0.875rem;
  --step-0: 1rem;
  --step-1: 1.25rem;
  --step-2: clamp(1.6rem, 1.2rem + 1.4vw, 2.25rem);
  --step-3: clamp(1.9rem, 1.2rem + 2.4vw, 2.9rem);

  --r-sm: 3px;
  --r-md: 6px;
  --r-lg: 12px;

  --ease: cubic-bezier(.2, .7, .2, 1);
  --z-header: 10;
  --z-skip: 20;
  --gutter: 16px;
}


*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-ja);
  font-size: var(--step-0);
  line-height: 1.85;
  overflow-x: hidden;
}

h1, h2, h3 {
  margin: 0; font-weight: 600; line-height: 1.4;
  word-break: auto-phrase; text-wrap: balance;
}
p, li, dd { text-wrap: pretty; }
p, ul, ol, dl { margin: 0; }
a { color: inherit; }

:focus-visible { outline: 3px solid var(--amber-fill); outline-offset: 3px; border-radius: 2px; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: var(--paper); padding: 8px 12px;
}
.skip:focus { left: 8px; top: 8px; z-index: var(--z-skip); }

.wrap { max-width: 1160px; margin: 0 auto; padding: 0 var(--gutter); }
.nb { display: inline-block; }
.num { font-variant-numeric: tabular-nums; }

/* Buttons & links */
.btn {
  display: inline-block;
  background: var(--amber-fill);
  color: var(--on-accent);
  font-weight: 600;
  text-decoration: none;
  padding: 13px 24px;
  border-radius: var(--r-md);
  box-shadow: 0 1px 0 rgb(19 35 59 / 0.15), 0 8px 20px -10px rgb(184 120 0 / 0.6);
  transition: transform 200ms var(--ease), background-color 200ms var(--ease), box-shadow 200ms var(--ease);
}
.btn:hover { background: #E8A83A; transform: translateY(-1px); box-shadow: 0 1px 0 rgb(19 35 59 / 0.15), 0 12px 24px -10px rgb(184 120 0 / 0.7); }
.btn:active { transform: translateY(1px) scale(0.98); box-shadow: 0 1px 0 rgb(19 35 59 / 0.15); }
.btn-small { padding: 7px 14px; font-size: var(--step--1); }
.btn-large { padding: 16px 30px; font-size: 1.05rem; }

.link {
  color: var(--ink);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 6px;
  text-decoration-color: var(--amber-fill);
  transition: text-underline-offset 200ms var(--ease), color 200ms var(--ease);
}
.link:hover { text-underline-offset: 3px; color: var(--amber); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: var(--z-header);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.header-inner { display: flex; align-items: center; gap: 24px; min-height: 60px; }
.header-cta { margin-left: auto; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-mark { width: 26px; height: 26px; color: var(--ink); }
.brand-dot { fill: var(--amber-fill); }
.brand-name { font-family: var(--font-latin); font-weight: 700; font-size: 1.15rem; letter-spacing: 0.01em; }
.brand-context {
  font-family: var(--font-latin); font-weight: 600; font-size: 1.05rem; letter-spacing: 0.04em;
  color: var(--steel); text-decoration: none; white-space: nowrap;
  padding-left: 14px; margin-left: -10px; border-left: 1px solid var(--line);
  line-height: 1.4;
}
.brand-context:hover { color: var(--ink); }
.nav { display: flex; gap: 20px; margin-left: auto; font-size: var(--step--1); }
.nav a { text-decoration: none; color: var(--ink-soft); }
@media (max-width: 820px) { .nav { display: none; } }

.crumbs { display: flex; gap: 8px; flex-wrap: wrap; font-size: var(--step--1); color: var(--steel); margin-bottom: 10px; }
.crumbs a { color: var(--ink-soft); text-underline-offset: 4px; }

/* Hero — drafting-grid texture ties the page to engineering planning */
.hero {
  position: relative;
  padding: 64px 0 88px;
  background-image: radial-gradient(var(--grid-dot) 1px, transparent 1.2px);
  background-size: 22px 22px;
  background-position: -11px -11px;
}
.hero::after {
  content: ""; position: absolute; inset: auto 0 0 0; height: 140px;
  background: linear-gradient(to bottom, transparent, var(--paper));
  pointer-events: none;
}
.hero > .wrap { position: relative; z-index: 1; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 56px; align-items: start; }
.kicker { color: var(--steel); font-size: var(--step--1); margin-bottom: 20px; }
.hero h1 { font-size: clamp(1.7rem, 1.1rem + 2vw, 2.45rem); font-weight: 700; line-height: 1.42; letter-spacing: -0.01em; }
.lead { margin-top: 24px; color: var(--ink-soft); max-width: 34em; }
.hero-actions { margin-top: 34px; display: flex; gap: 28px; align-items: center; flex-wrap: wrap; }

/* Plan strip */
.strip {
  margin: 0;
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  padding: 20px 20px 16px;
  box-shadow: var(--shadow);
}
.strip-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.strip-title { font-weight: 600; font-size: var(--step--1); }
.seg { display: inline-flex; gap: 2px; padding: 3px; background: var(--paper-deep); border-radius: var(--r-md); }
.seg button {
  font: inherit; font-size: var(--step--1);
  background: transparent; color: var(--ink-soft);
  border: 0; border-radius: var(--r-sm);
  padding: 5px 12px; cursor: pointer; min-height: 34px;
  transition: background-color 200ms var(--ease), color 200ms var(--ease), transform 150ms var(--ease);
}
.seg button:active { transform: scale(0.97); }
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.seg button:not([aria-pressed="true"]):hover { background: var(--surface); color: var(--ink); }

.plan { display: block; width: 100%; height: auto; margin-top: 14px; }
.plan text { font-family: var(--font-latin); font-size: 12px; fill: var(--steel); font-variant-numeric: tabular-nums; }
.plan .grid { stroke: var(--line-soft); stroke-width: 1; }
.plan .fy { stroke: var(--steel); stroke-width: 1; stroke-dasharray: 3 3; }
.plan .window { fill: var(--window); }
.plan .visit { fill: var(--ink); }
.plan .late { fill: var(--amber-fill); }
.plan .now { stroke: var(--amber); stroke-width: 2; }
.plan .spare-ok { fill: var(--green); }
.plan .spare-low { fill: var(--amber-fill); }
.plan .anim { transition: x 600ms var(--ease), width 600ms var(--ease), fill 300ms; }
/* One orchestrated moment: the plan draws itself row by row on load */
.plan .row { animation: row-in 700ms var(--ease) both; animation-delay: calc(var(--i) * 70ms + 150ms); transform-box: fill-box; transform-origin: left center; }
@keyframes row-in { from { opacity: 0; transform: scaleX(0.6); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .plan .anim { transition: none; }
  .plan .row { animation: none; }
}

.readout {
  margin-top: 12px;
  border-top: 1px solid var(--line-soft);
  padding-top: 12px;
  display: grid; grid-template-columns: auto 1fr; gap: 4px 20px;
}
.readout-row { display: contents; }
.readout-label { color: var(--steel); font-size: var(--step--1); }
.readout-val { font-weight: 600; }
#r-prob { font-family: var(--font-latin); font-size: 1.2rem; line-height: 1.5; font-variant-numeric: tabular-nums; }
.readout-note { grid-column: 1 / -1; font-size: var(--step--1); color: var(--ink-soft); margin-top: 4px; }
.readout[data-state="alert"] #r-call { color: var(--amber); }

.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-top: 12px; font-size: 0.8rem; color: var(--steel); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend .legend-note { margin-left: auto; }
.sw { display: inline-block; width: 16px; height: 8px; border-radius: 1px; }
.sw-window { background: var(--window); }
.sw-visit { background: var(--ink); }
.sw-late { background: var(--amber-fill); }

.proof {
  list-style: none; padding: 22px 0 0; margin: 56px 0 0;
  border-top: 1px solid var(--line);
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px 40px;
  color: var(--ink-soft); font-size: 0.95rem;
}
.proof strong { color: var(--ink); font-weight: 600; }

/* Sections (bottom padding optically larger) */
.section { padding: 88px 0 104px; }
.section-alt { background: var(--paper-deep); }
.section h2 { font-size: var(--step-2); letter-spacing: -0.01em; max-width: 24em; }
.section-lead { margin-top: 18px; color: var(--ink-soft); max-width: 38em; }
.fine { margin-top: 18px; font-size: var(--step--1); color: var(--steel); }

/* Pains */
.pains { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; margin-top: 40px; }
.pain-col h3 { font-size: var(--step-1); padding-bottom: 10px; border-bottom: 2px solid var(--ink); }
.pain-col ul { list-style: none; padding: 0; }
.pain-col li { padding: 14px 0 14px 22px; border-bottom: 1px solid var(--line); position: relative; }
.pain-col li::before {
  content: ""; position: absolute; left: 2px; top: 1.5em;
  width: 10px; height: 2px; background: var(--amber-fill);
}

/* Layers: stack reads top = what's missing, bottom = foundation */
.stack { margin-top: 44px; display: flex; flex-direction: column; gap: 8px; }
.layer {
  display: grid;
  grid-template-columns: 7em minmax(0, 1fr) minmax(0, 1.4fr) auto;
  gap: 24px; align-items: center;
  background: var(--surface);
  border-radius: var(--r-md);
  border-left: 6px solid var(--steel);
  padding: 22px 24px;
}
.layer-check, .layer-decide { border-left-color: var(--amber-fill); }
.layer-decide { margin-right: 36px; }
.layer-make { margin-right: 72px; }
.layer-name { font-size: var(--step-1); font-weight: 700; }
.layer-q { font-weight: 600; }
.layer-a { color: var(--ink-soft); font-size: 0.95rem; }
.tag {
  display: inline-block; font-size: 0.78rem; white-space: nowrap;
  padding: 2px 8px; border: 1px solid var(--line); border-radius: var(--r-sm); color: var(--steel);
}
.tag-new { border-color: transparent; color: var(--amber); background: var(--amber-wash); font-weight: 600; }

/* Benefits: before → after rows, no cards */
.shift { margin-top: 44px; border-top: 2px solid var(--ink); }
.shift-row {
  display: grid; grid-template-columns: 9em minmax(0, 1fr) 2.5em minmax(0, 1.35fr);
  gap: 20px; align-items: baseline;
  padding: 26px 0; border-bottom: 1px solid var(--line);
}
.shift-role { font-size: var(--step--1); font-weight: 600; color: var(--steel); }
.shift-before { color: var(--steel); }
.shift-arrow { color: var(--amber); font-family: var(--font-latin); font-weight: 700; font-size: 1.2rem; text-align: center; }
.shift-after { font-weight: 600; font-size: 1.05rem; }

/* Mid CTA: tinted panel inside the grid, not a dark full-bleed band */
.cta-panel {
  margin-top: 56px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
  padding: 28px 32px;
  background: var(--amber-wash);
  border-radius: var(--r-lg);
}
.cta-panel p { font-size: var(--step-1); font-weight: 600; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 2px var(--ink); }
.btn-ghost:hover { background: color-mix(in srgb, var(--ink) 8%, transparent); box-shadow: inset 0 0 0 2px var(--ink); }

/* Comparison */
.table-scroll { margin-top: 36px; overflow-x: auto; }
.compare { width: 100%; min-width: 640px; border-collapse: collapse; font-size: 0.95rem; }
.compare th, .compare td { text-align: left; padding: 15px 18px; border-bottom: 1px solid var(--line); vertical-align: top; }
.compare thead th { font-size: var(--step--1); color: var(--steel); font-weight: 600; border-bottom: 2px solid var(--ink); }
.compare tbody th { white-space: nowrap; font-weight: 600; }
.compare td { color: var(--steel); }
.compare .compare-us { background: var(--surface); color: var(--ink); font-weight: 600; box-shadow: inset 3px 0 0 var(--amber-fill); }
.compare thead .compare-us { color: var(--ink); }

/* Scenarios: one featured + two stacked (asymmetric) */
.scenarios { list-style: none; padding: 0; margin: 44px 0 0; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); grid-template-rows: auto auto; gap: 20px; }
.scenario { background: var(--surface); border-radius: var(--r-md); padding: 26px 28px; display: flex; flex-direction: column; }
.scenario-main { grid-row: span 2; padding: 34px 34px 30px; background: var(--ink); color: var(--paper); border-radius: var(--r-lg); }
.scenario.scenario-main .scenario-kind, .scenario.scenario-main p { color: color-mix(in srgb, var(--paper) 78%, transparent); }
.scenario-main .tag { color: var(--paper); border-color: color-mix(in srgb, var(--paper) 35%, transparent); }
.scenario-main h3 { font-size: var(--step-2); }
.scenario-kind { font-size: var(--step--1); color: var(--steel); margin-bottom: 6px; }
.scenario h3 { font-size: var(--step-1); margin-bottom: 12px; }
.scenario p { color: var(--ink-soft); font-size: 0.95rem; }
.scenario-figs { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 10px; }
.scenario-figs li { display: grid; grid-template-columns: 7.5em 1fr; gap: 12px; padding-top: 10px; border-top: 1px solid color-mix(in srgb, var(--paper) 18%, transparent); font-size: 0.92rem; }
.scenario-figs strong { font-family: var(--font-latin); font-size: 1.35rem; font-weight: 600; color: var(--amber-fill); font-variant-numeric: tabular-nums; line-height: 1.3; }
.case-built { display: flex; gap: 6px; flex-wrap: wrap; margin-top: auto; padding-top: 18px; }

/* Architecture */
.arch { margin-top: 44px; display: grid; grid-template-columns: minmax(0,1fr) 120px minmax(0,1fr); align-items: stretch; }
.arch-block { background: var(--surface); border-radius: var(--r-md); padding: 28px 28px 26px; display: flex; flex-direction: column; }
.arch-block h3 { font-family: var(--font-latin); font-size: 1.6rem; font-weight: 700; letter-spacing: 0.01em; }
.arch-role { color: var(--steel); margin-bottom: 14px; }
.arch-block ul { padding-left: 1.2em; color: var(--ink-soft); }
.arch-block li + li { margin-top: 6px; }
.arch-join { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; color: var(--steel); font-size: 0.8rem; text-align: center; }
.arch-join svg { width: 60px; height: 40px; color: var(--amber); }

/* Sequences (monthly loop, rollout steps) */
.loop, .steps {
  list-style: none; padding: 0; margin-top: 44px;
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  counter-reset: n;
}
#platform .loop { margin-top: 56px; }
.loop li, .steps li { counter-increment: n; position: relative; padding: 0 24px 0 0; }
.loop li::before, .steps li::before {
  content: counter(n);
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: var(--r-md);
  background: var(--ink); color: var(--paper);
  font-family: var(--font-latin); font-weight: 700; font-size: 1.05rem;
  margin-bottom: 16px; position: relative; z-index: 1;
}
.loop li::after, .steps li::after {
  content: ""; position: absolute; top: 17px; left: 36px; right: 0;
  height: 2px; background: var(--line);
}
.loop li:last-child::after { background: repeating-linear-gradient(90deg, var(--amber-fill) 0 6px, transparent 6px 10px); }
.steps li:last-child::after { display: none; }
.loop h3, .steps h3 { font-size: var(--step-1); margin-bottom: 8px; }
.loop p, .steps p { color: var(--ink-soft); font-size: 0.95rem; }

/* FAQ: question / answer side by side, always visible */
.faq { margin-top: 36px; border-top: 2px solid var(--ink); }
.faq-item { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr); gap: 40px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.faq dt { font-weight: 600; }
.faq dd { margin: 0; color: var(--ink-soft); }

/* Final CTA: same light palette, weight carried by type */
.final-cta { padding-top: 104px; padding-bottom: 120px; border-top: 1px solid var(--line); }
.final-cta-inner { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 48px; align-items: end; }
.final-cta h2 { font-size: var(--step-3); font-weight: 700; letter-spacing: -0.015em; }
.final-cta-inner > div > p { margin-top: 16px; color: var(--ink-soft); max-width: 32em; }
.final-cta-actions .fine { margin-top: 14px; }

.disclaimer { margin-top: 24px; font-size: var(--step--1); color: var(--steel); max-width: 48em; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 28px 0 36px; font-size: var(--step--1); color: var(--steel); }
.footer-inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.site-footer a { text-underline-offset: 4px; }
.powered { display: inline-flex; align-items: center; gap: 8px; color: var(--steel); text-decoration: none; }
.powered img { width: 24px; height: 24px; border-radius: 6px; }
.powered-name { font-family: var(--font-latin); font-weight: 700; color: var(--ink); }
.powered:hover .powered-name { text-decoration: underline; text-underline-offset: 4px; }

.notfound { padding: 96px 0; }
.notfound h1 { font-size: var(--step-2); margin-bottom: 12px; }

/* Responsive */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .layer { grid-template-columns: 6em minmax(0,1fr); }
  .layer-a, .layer-cov { grid-column: 2; }
  .layer-decide, .layer-make { margin-right: 0; }
  .arch { grid-template-columns: 1fr; }
  .arch-join { flex-direction: row; padding: 12px 0; }
  .arch-join svg { transform: rotate(90deg); }
  .scenarios { grid-template-columns: 1fr; }
  .scenario-main { grid-row: auto; }
  .final-cta-inner { grid-template-columns: 1fr; gap: 28px; align-items: start; }
}
@media (max-width: 720px) {
  .section { padding: 60px 0 72px; }
  .hero { padding: 36px 0 56px; }
  .proof { grid-template-columns: 1fr; gap: 10px; margin-top: 40px; }
  .pains { grid-template-columns: 1fr; gap: 36px; }
  .shift-row { grid-template-columns: 1fr; gap: 6px; }
  .shift-arrow { display: none; }
  .shift-after { padding-left: 14px; border-left: 3px solid var(--amber-fill); }
  .cta-panel { padding: 24px; }
  .loop, .steps { grid-template-columns: 1fr; gap: 28px; }
  .loop li, .steps li { padding: 0 0 0 56px; }
  .loop li::before, .steps li::before { position: absolute; left: 0; top: 0; margin: 0; }
  .loop li::after, .steps li::after { top: 40px; bottom: -24px; left: 17px; right: auto; width: 2px; height: auto; }
  .loop li:last-child::after { background: repeating-linear-gradient(180deg, var(--amber-fill) 0 6px, transparent 6px 10px); }
  .layer { grid-template-columns: 1fr; gap: 8px; }
  .layer-a, .layer-cov { grid-column: 1; }
  .faq-item { grid-template-columns: 1fr; gap: 8px; }
  .legend .legend-note { margin-left: 0; }
  .scenario-main { padding: 28px 24px; }
}

/* Header: keep the product name and CTA on one line on phones */
.brand-name, .btn-small { white-space: nowrap; }
@media (max-width: 420px) {
  .brand-name { font-size: 1rem; }
  .btn-small { padding-left: 12px; padding-right: 12px; }
}

/* ------------------------------------------------------------------
   Product page (/ai-assisted-solver/) — calm, typographic, few elements
   ------------------------------------------------------------------ */
.p-hero {
  padding: 132px 0 120px;
  background-image: radial-gradient(var(--grid-dot) 1px, transparent 1.2px);
  background-size: 22px 22px;
  background-position: -11px -11px;
  border-bottom: 1px solid var(--line-soft);
}
.p-hero .kicker { margin-bottom: 28px; }
.p-hero h1 {
  font-size: clamp(2.1rem, 1rem + 4.2vw, 4.1rem);
  font-weight: 700; line-height: 1.3; letter-spacing: -0.02em;
  max-width: 15em;
}
.p-lead { margin-top: 36px; color: var(--ink-soft); font-size: 1.08rem; max-width: 36em; }
.p-hero .hero-actions { margin-top: 44px; }

.p-section { padding: 112px 0 128px; }
.p-section h2 { font-size: var(--step-3); font-weight: 700; letter-spacing: -0.015em; }

/* Three characteristics: rule-separated columns, no cards */
.p-features { margin-top: 64px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 48px; }
.p-feature { border-top: 2px solid var(--ink); padding-top: 22px; display: flex; flex-direction: column; }
.p-feature-name { font-family: var(--font-latin); font-weight: 700; font-size: 1.05rem; letter-spacing: 0.04em; color: var(--amber); }
.p-feature h3 { font-size: var(--step-1); margin: 10px 0 14px; }
.p-feature > p:not([class]) { color: var(--ink-soft); }
.p-feature-on { margin-top: auto; padding-top: 18px; font-size: var(--step--1); color: var(--steel); }

/* Loop diagram */
.p-loop { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: 56px; align-items: center; }
.p-loop-key { list-style: none; padding: 0; margin-top: 36px; display: grid; gap: 14px; font-size: 0.95rem; color: var(--ink-soft); }
.p-loop-key li { display: flex; gap: 12px; align-items: baseline; }
.p-loop-key strong { display: block; color: var(--ink); font-family: var(--font-latin); font-weight: 700; font-size: 1.05rem; letter-spacing: 0.01em; }
.key-sw { flex: none; width: 14px; height: 14px; border-radius: 3px; position: relative; top: 2px; border: 2px solid; }
.key-sec { background: var(--surface); border-color: var(--ink); }
.key-ae { background: var(--amber-wash); border-color: var(--amber-fill); }
.key-ext { background: transparent; border-color: var(--steel); border-style: dashed; }
.p-loop-fig { margin: 0; }
.loopsvg { display: block; width: 100%; height: auto; }
.loopsvg-ring { max-width: 560px; margin: 0 auto; }
.loopsvg-list { display: none; max-width: 420px; margin: 0 auto; }
.loopsvg .ring { fill: none; stroke: var(--window); stroke-width: 2; }
.loopsvg .link-line { stroke: var(--window); stroke-width: 2; }
.loopsvg .back-line { fill: none; stroke: var(--amber-fill); stroke-width: 2; stroke-dasharray: 6 4; }
.loopsvg .chev { fill: none; stroke: var(--steel); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.loopsvg .chev-back { stroke: var(--amber); }
.loopsvg .node rect { stroke-width: 1.5; }
.loopsvg .node-sec rect { fill: var(--surface); stroke: var(--ink); }
.loopsvg .node-ae rect { fill: var(--amber-wash); stroke: var(--amber-fill); }
.loopsvg .node-ext rect { fill: var(--paper-deep); stroke: var(--steel); stroke-dasharray: 4 3; }
.loopsvg text { font-family: var(--font-ja); text-anchor: middle; }
.loopsvg .nl { font-size: 14px; font-weight: 600; fill: var(--ink); }
.loopsvg .np { font-family: var(--font-latin); font-size: 12px; font-weight: 600; fill: var(--steel); letter-spacing: 0.02em; }
.loopsvg .nl-left { text-anchor: start; font-size: 15px; }
.loopsvg .np-right { text-anchor: end; font-size: 13px; }
.loopsvg .center { font-size: 15px; font-weight: 600; fill: var(--ink-soft); }
.loopsvg .back-label { font-size: 12px; fill: var(--amber); font-weight: 600; }

/* Cases */
.p-case {
  margin-top: 56px;
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 40px; align-items: end;
  background: var(--ink); color: var(--paper);
  border-radius: var(--r-lg); padding: 40px 44px;
}
.p-case-kind { font-size: var(--step--1); color: color-mix(in srgb, var(--paper) 70%, transparent); }
.p-case h3 { font-family: var(--font-latin); font-size: clamp(2.2rem, 1.6rem + 2vw, 3.2rem); font-weight: 700; letter-spacing: 0.02em; line-height: 1.2; margin: 8px 0 16px; }
.p-case-body > p:not([class]) { color: color-mix(in srgb, var(--paper) 80%, transparent); max-width: 40em; }
.p-case-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.p-case .btn-ghost { color: var(--paper); box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--paper) 70%, transparent); }
.p-case .btn-ghost:hover { background: color-mix(in srgb, var(--paper) 10%, transparent); }

.p-examples { margin-top: 72px; }
.p-examples h3 { font-size: var(--step-1); }
.p-examples ul { list-style: none; padding: 0; margin-top: 20px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0 32px; border-top: 1px solid var(--line); }
.p-examples li { padding: 18px 0; border-bottom: 1px solid var(--line); display: flex; flex-direction: column; gap: 4px; }
.p-examples strong { font-weight: 600; }
.p-examples span { font-size: var(--step--1); color: var(--steel); }

@media (max-width: 960px) {
  .p-features { grid-template-columns: 1fr; gap: 40px; }
  .p-loop { grid-template-columns: 1fr; gap: 40px; }
  .p-examples ul { grid-template-columns: 1fr 1fr; }
  .p-case { grid-template-columns: 1fr; align-items: start; gap: 28px; }
}
@media (max-width: 720px) {
  .p-hero { padding: 72px 0 72px; }
  .p-lead { margin-top: 28px; font-size: 1rem; }
  .p-section { padding: 72px 0 88px; }
  .p-features { margin-top: 40px; }
  .p-case { margin-top: 36px; padding: 30px 24px; }
  .p-examples { margin-top: 52px; }
  .p-examples ul { grid-template-columns: 1fr; }
  .loopsvg-ring { display: none; }
  .loopsvg-list { display: block; }
}

/* Deep links into the demo (product page case card, MRO LP scenarios) */
.demo-links-label { margin-top: 22px; font-size: var(--step--1); font-weight: 600; letter-spacing: 0.02em; }
.demo-links { list-style: none; padding: 0; margin-top: 6px; display: grid; gap: 2px; }
.demo-links li { padding: 5px 0; }
.demo-links a {
  font-weight: 600; text-decoration: underline; text-decoration-color: var(--amber-fill);
  text-decoration-thickness: 2px; text-underline-offset: 5px;
}
.demo-links a::after { content: "→"; display: inline-block; margin-left: 8px; font-family: var(--font-latin); color: var(--amber-fill); text-decoration: none; }
.demo-links a:hover { text-underline-offset: 3px; }
.scenario .demo-links-label { color: var(--steel); }
.scenario.scenario-main .demo-links-label, .p-case .demo-links-label { color: color-mix(in srgb, var(--paper) 70%, transparent); }
.scenario-main .demo-links a, .p-case .demo-links a { color: var(--paper); }
@media (min-width: 961px) {
  .p-case .link-groups { display: grid; grid-template-columns: auto auto; justify-content: start; gap: 0 48px; }
}

/* PDCA と OODA：二つの速さの輪（製品ページ・MRO LP） */
.loops2 { margin-top: 56px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.loop2 { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 28px 28px 30px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 14px; }
.loop2-head { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.loop2-name { font-family: var(--font-latin); font-weight: 700; font-size: 2.1rem; line-height: 1; letter-spacing: 0.02em; color: var(--ink); }
.loop2-pace { font-size: var(--step--1); font-weight: 600; color: var(--amber); border: 1px solid var(--amber-fill); border-radius: 999px; padding: 1px 10px; }
.loop2 h3 { font-size: var(--step-1); margin: 0; }
.loop2 > p { color: var(--ink-soft); }
.loop2-steps { list-style: none; padding: 0; margin: 4px 0 0; display: grid; gap: 10px; }
.loop2-steps li { display: grid; grid-template-columns: 2.4rem minmax(0, 1fr); gap: 12px; align-items: baseline; padding-top: 10px; border-top: 1px solid var(--line-soft); }
.loop2-steps b { font-family: var(--font-latin); font-weight: 700; font-size: 1.35rem; color: var(--amber); line-height: 1; }
.loop2-steps span { color: var(--ink-soft); font-size: 0.95rem; }
.loop2-steps strong { color: var(--ink); font-weight: 600; margin-right: 6px; }
.loops2-link { margin-top: 28px; padding: 18px 22px; border-left: 4px solid var(--amber-fill); background: var(--amber-wash); border-radius: var(--r-md); color: var(--ink); }
.loops2-link strong { font-weight: 700; }
@media (max-width: 900px) { .loops2 { grid-template-columns: 1fr; gap: 20px; margin-top: 36px; } .loop2 { padding: 22px 20px 24px; } .loop2-name { font-size: 1.8rem; } }

/* Language switch (日本語 / English) */
.lang-switch { margin-left: auto; font-size: var(--step--1); font-weight: 600; color: var(--ink-soft); text-decoration: none; padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; white-space: nowrap; }
.lang-switch:hover { color: var(--ink); border-color: var(--ink-soft); }
.lang-switch + .header-cta { margin-left: 0; }
@media (max-width: 420px) { .lang-switch { padding: 3px 8px; } .header-inner { gap: 12px; } }
.lang-switch .ls-short { display: none; }
@media (max-width: 480px) {
  .lang-switch .ls-long { display: none; }
  .lang-switch .ls-short { display: inline; }
  .header-inner:has(.brand-context) .brand-name { display: none; }
}
@media (max-width: 340px) { .brand-name { display: none; } }
.hero-grid > * { min-width: 0; }
.hero-copy h1, .hero-copy .lead, .crumbs { overflow-wrap: break-word; }